Bornite
Bornite (Cu5FeS4)
mineral
Category
Man Made
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Red Jasper
Jasper (Silicon Dioxide with Iron Oxide inclusions, SiO2)
sedimentary
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Chlorite (Small Flakes/Sand)
Chlorite Group (Magnesium Iron Aluminum Silicate Hydroxide - (Mg,Fe)3(Si,Al)4O10(OH)2·(Mg,Fe)3(OH)6)
mineral
Dragon Stone
Ohko Stone (Argillaceous sedimentary rock)
sedimentary
Ethiopian Opal (Welo Opal in Matrix)
Hydrated Silica (SiO2·nH2O)
mineral
Aragonite
Aragonite (Carbonate mineral), CaCO3
mineral
Quartz on Chlorite Schist
Chlorite Schist (Mg,Fe)3(Si,Al)4O10(OH)2 with Quartz (SiO2)
metamorphic
Fossiliferous Limestone
Calcium Carbonate (CaCO3) with Bioclastic Inclusions
sedimentary
Jasper (likely Brecciated or Multi-colored)
Jasper (SiO2)
sedimentary
Limonite (Iron Stone/Goethite)
Limonite (mixture of hydrated iron oxides, primarily Goethite: α-FeO(OH))
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Fairburn Agate / Agate-bearing Breccia
Cryptocrystalline Quartz (SiO2) within Jasper/Breccia matrix
sedimentary
Puddingstone
Conglomerate (Silicon Dioxide - SiO2 with various inclusions)
sedimentary
Ironstone (Limonitic Concretion)
Limonite (FeO(OH)·nH2O) with Goethite and Hematite inclusions
sedimentary
Red Sandstone
Clastic sedimentary rock (Quartz arenite/Arkose)
sedimentary
Quartz Geode
Silicon Dioxide (SiO2)
mineral
Jasper with Quartz Vein
Silicon Dioxide (SiO2) with impurities
sedimentary
Limonitic Iron Ore / Goethite
Hydrated Iron(III) oxide-hydroxide (primarily FeO(OH)·nH2O)
sedimentary
Peacock Ore (Bornite or Iridescent Chalcopyrite)
Bornite (Cu5FeS4) or Chalcopyrite (CuFeS2) with tarnish
mineral
Jasper
Silicon Dioxide (SiO2) with impurities
mineral
Yellow Jasper
Silicon Dioxide (SiO2) with iron oxide impurities
sedimentary
Red Garnet (Almandine-Pyrope series)
Garnet Group, Almandine (Fe3Al2(SiO4)3) or Pyrope (Mg3Al2(SiO4)3)
mineral
Sandstone (Quartz-rich)
Arenite (primarily SiO2)
sedimentary
Limestone
Calcareous sedimentary rock (primarily Calcium Carbonate, CaCO3)
sedimentary
Serpentine
Serpentine-group (Mg, Fe, Ni, Al, Zn, Mn)2-3(Si, Al, Fe)2O5(OH)4
metamorphic
Basalt
Basalt (Aphanitic Mafic Igneous Rock)
igneous
Serpentinite
Serpentinite (Mg, Fe, Ni, Al, Zn, Mn)2-3(Si, Al, Fe)2O5(OH)4
metamorphic
Sandstone (Calcareous or Ferruginous)
Clastic sedimentary rock (SiO2 with CaCO3 or Fe2O3 cement)
sedimentary
Green Moss Agate
Silicon Dioxide (SiO2) with inclusions of hornblende or chlorite
sedimentary
Iron Meteorite (Oxidized)
Iron-Nickel Alloy (Fe, Ni)
meteorite
Vesicular Basalt
Vesicular Basalt (rich in silicate minerals mostly Plagioclase and Pyroxene)
igneous
Jasper
Jasper (Silicon Dioxide, SiO2)
sedimentary
Travertine
Calcareous Tufa / Travertine (CaCO3)
sedimentary
Red Jasper
Silicon Dioxide with Hematite inclusions (SiO2 + Fe2O3)
sedimentary
Basalt River Pebble
Basalt
igneous
Sandstone
Arenite (SiO2 principal component)
sedimentary
Limestone (with Calcite Veining)
Calcium Carbonate (CaCO3)
sedimentary
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Sandstone (Ferruginous)
Arenite (primarily SiO2 with Fe2O3 staining)
sedimentary
Feldspar (Orthoclase)
Potassium Feldspar (KAlSi3O8)
mineral
Limestone (River Pebble)
Calcium Carbonate (CaCO3)
sedimentary